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` Patented Feb. 27, 1894.

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JOHN T. MCOARRIER, OF MNNEAPOLIS, MINNESOTA, ASSIGOR OF FIVE- SIXTHS TOEDWARD S. AUSTIN, AMASA C. PAUL, AND CHARLES G.

HAWLEY, OF SAME PLACE.

CARBURETOR.

SPECIFICATION forming part of Letters Patent No. 515,440, dated February27, 1894. Application filed Tune 15, 1893. Serial No. 477,639. (Nomodel.)

.To a/ZZ whom it may concern,.-

Be it known that I, JOHN T. MCCARRIER, of the city of Minneapolis,county of Hennepin, State of Minnesota, have invented certain new anduseful Improvements in Carburetors, of which the following is aspecification.

rlhis invention. relates to improvements in carburetors and particularlyto improvements in carburetors designed for use in carburet ing air bypassing a current of air through a body of oil whereby the oilvapor istaken up by the air and is carried to the point of ignition. This formsa gaseous body which if subjected to sufficient heat will be made into afixed gas.

The object which 1 have in view is to provide a carburetor of a cheapand simple construction, in which the whole volume ot air may becarbureted and in which the gas may be passed through asingle chamber ofthe carburetor or through several chambers in succession and afterwardthrough a scourer,

.wherein any of the oil that will condense will be taken out and thegaseous product leftin condition for passage to the holder free from anycondensable matter.

In the accompanying drawings forming part of this specification; Figure1 is a front elevation and partial section of a generator constructed inaccordance with my invention. Fig. 2 is a horizontal section of thesame. Fig. 3 is a partial front elevation.

In the drawings, 2 represents the casing which preferably incloses allof the parts of the generator and also incloses the scrubber or scourer.This casing is preferably divided into aseries of compartments by meansof the transverse partitions 3. Each of the compartments except theupper one is preferably a generator, and each is provided with aperforated bottom 5 beneath which is a coiled steam pipe 7 connectedboth to an intake pipe 9 and exhaust pipe l1. The steam entering throughthis pipe passes around through the coiled pipe 7 and then escapesthrough the pipe 11. An air pipe 13 enters the lower chamber of thegenerator from any suitable air forcing device and the lower end of thepipe opens into the generatorbelow the 5o partition 5.

The chamber is preferably filled or partially iilled above theperforated plate 5 with charcoal, broken stone or other suitablematerial 15 which, being loosely piled into the chamber provides a largenumber of interstices forming irregular passages for the air to passthrough. An oil pipe 17 is arranged With a branch pipe 19 extending tothe bottom and another pipe 2l to the top of each compartment, saidbranch pipes being preferably provided with suitable valves 23 and apipe 17 being also provided with valves 25. Each of the compartments isalso preferably provided With a suitable gage glass 27 which shows theamount of oil contained in the compartment. Extendingfromtheupperportionof each com'partmentis apipe29 Which projects into the next compartmentabove and has its lower end extending below the perforated plate 5. Thepipes 29 are provided with suitable valves 31 by means of which they maybe closed if preferred. Pipes 33 also extend from the top of eachcompartment into the Alower part of the compartment containing thescrubber or scourer, so that if preferred the gas from any compartmentmay be led into the scourer Without being carried through anothercompartment or, if preferred, the gas may be passed successively throughall of the compartments before being led into the soourer. The scoureris preferably provided with a series of transverse plates 39 formed ofWood or other suitable material each having a series of small openingsor holes therein so that as the gas passes through these openings any ofthe oil carried thereby that is condensable will be taken out and willcollectin the bottom of the compartment where it may be drawn outthrough the pipe 41 into the pipe 17. As all of the branch pipes extendsing from the pipe 17 tothe compartments of the generator are providedwith valves the oil may be drawn out of any compartment when desired.The steam pipes 9 and 11 are also provided with suitable valves for thepurpose of controlling the inlet and outlet of steam from the variouscompartments.

The scouring chamber is preferably provided With a suitable pressuregage 45 and with a test burner 47, and this chamber is also providedwith an outlet pipe 49 having IOO a suitable valve 51 through which theiow of gas from the generator to the holder may be regulated. p

The apparatus is capable of being varied in detail without departingfrom my invention, and it will be understood thatit may be made of anysize and any number of compartments may be arranged therein. y

The operation of the apparatus is as follows: One or more of thechambers of the carburetor are filled with oil which is inserted throughthe pipe 17. Steam issupplied to the steam-coils from the pipe 9 and acurrent of air is forced through the pipe 13. This air enters the lowercompartment beneath the perforated bottom and then passes up through thecompartment in the spaces between the broken stone or charcoal l5. Theoil in4 each compartment is heated by the steam-pipe and a considerablequantity of vapor is taken up and carried by the air- Gurrent into thenext compartment or directly into the scourer as desired, the operationbeing determined by opening or closing the valves in the pipe. Afterpassing through the chambers the gaseous product enters the scourer andpasses through the plates 39. Any of the oil that will condense isremoved and is let out of the scourer through the pipe el. The gaseousproduct is led from the scourer to a suitable holder from which it maybe piped to points where it is to be used.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a carburetor, the combination, with a suitablecasing divided into a series of carbureting compartments, each providedwithl a perforated bottom, a steam coil arranged in said compartmentbelow said bottom, 4o

steam inlet and outlet pipes connected with all of said steam coils, oilpipes for supplying oil to each of said compartments, an air inlet pipeextending into the lower compartment and having its open end below saidperforated bottom, and a pipe extending from the top of each compartmentinto the next compartment and having its open end below said perforatedbottom, for the purpose specilied.

2. In a carburetor and scourer, the combination, of a suitable casing,provided with a series of carbnreting compartments, each bein g providedwith a perforated bottom,a coiled steam pipe arranged in eachcarbureting compartment below the perforated bottom, an air inlet pipeextending into the lower compartment and having its open end below theperforated bottom, a scouring compartment located above said carburetingcompartments a pipe extending from each carbureting compartment into thescouringcom partment and another pipe extending from each carburetingcompartment into. the next,

succeeding carbureting compartment,A and valves provided in said pipeswhereby the gas from each compartment may beled directly into thescourer or may be led into the= next succeeding generator, andpipesforsupplying oil to said carburetors, substantially as described.

In testimony whereof I have hereunto set my hand this lstday of June,1893.

JOHN T. MCCARRI'ER.

In presence of- F. s. IlYON, R. C. PAUL.

